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Add unix_sock display for ipc

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This commit is contained in:
Martin Piatka
2022-05-19 12:46:29 +02:00
parent 8291fc64f5
commit af7d6ae7d6
2 changed files with 271 additions and 0 deletions
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1
Makefile.in
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@@ -205,6 +205,7 @@ COMMON_OBJS = \
src/video_display/pipe.o \
src/video_display/proxy.o \
src/video_display/multiplier.o \
src/video_display/unix_sock.o \
src/video_export.o \
src/video_rxtx.o \
src/video_rxtx/h264_sdp.o \

270
src/video_display/unix_sock.cpp Normal file
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@@ -0,0 +1,270 @@
/**
* @file video_display/unix_sock.cpp
* @author Martin Piatka <piatka@cesnet.cz>
*/
/*
* Copyright (c) 2022 CESNET, z. s. p. o.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of CESNET nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "config_unix.h"
#include "config_win32.h"
#include "debug.h"
#include "lib_common.h"
#include <fstream>
#include <condition_variable>
#include <chrono>
#include <list>
#include <map>
#include <vector>
#include <memory>
#include <mutex>
#include <queue>
#include <unordered_map>
#include <cmath>
#include "video.h"
#include "video_display.h"
#include "video_codec.h"
#include "tools/ipc_frame.h"
#include "tools/ipc_frame_ug.h"
#include "tools/ipc_frame_unix.h"
static constexpr unsigned int IN_QUEUE_MAX_BUFFER_LEN = 5;
static constexpr int SKIP_FIRST_N_FRAMES_IN_STREAM = 5;
namespace{
struct frame_deleter { void operator()(video_frame *f){ vf_free(f); } };
using unique_frame = std::unique_ptr<video_frame, frame_deleter>;
}
struct state_unix_sock {
std::queue<unique_frame> incoming_queue;
std::condition_variable frame_consumed_cv;
std::condition_variable frame_available_cv;
std::mutex lock;
struct video_desc desc;
struct video_desc display_desc;
Ipc_frame_uniq ipc_frame;
Ipc_frame_writer_uniq frame_writer;
struct module *parent;
};
static void show_help(){
printf("unix socket display\n");
}
static void *display_unix_sock_init(struct module *parent, const char *fmt, unsigned int flags)
{
UNUSED(flags);
UNUSED(fmt);
auto s = std::make_unique<state_unix_sock>();
s->parent = parent;
s->ipc_frame.reset(ipc_frame_new());
s->frame_writer.reset(ipc_frame_writer_new("/tmp/ug_unix"));
if(!s->frame_writer){
exit(EXIT_FAILURE);
}
return s.release();
}
static void write_frame(state_unix_sock *s, video_frame *f){
ipc_frame_from_ug_frame(s->ipc_frame.get(), f, VIDEO_CODEC_NONE, 0);
errno = 0;
if(!ipc_frame_writer_write(s->frame_writer.get(), s->ipc_frame.get())){
perror("Unable to send frame");
exit(1);
}
}
static void display_unix_sock_run(void *state)
{
auto s = static_cast<state_unix_sock *>(state);
int skipped = 0;
while (1) {
auto frame = [&]{
std::unique_lock<std::mutex> l(s->lock);
s->frame_available_cv.wait(l,
[s]{return s->incoming_queue.size() > 0;});
auto frame = std::move(s->incoming_queue.front());
s->incoming_queue.pop();
s->frame_consumed_cv.notify_one();
return frame;
}();
if (!frame) {
break;
}
if (skipped < SKIP_FIRST_N_FRAMES_IN_STREAM){
skipped++;
continue;
}
write_frame(s, frame.get());
}
}
static void display_unix_sock_done(void *state)
{
auto s = static_cast<state_unix_sock *>(state);
delete s;
}
static struct video_frame *display_unix_sock_getf(void *state)
{
auto s = static_cast<state_unix_sock *>(state);
return vf_alloc_desc_data(s->desc);
}
static int display_unix_sock_putf(void *state, struct video_frame *frame, int flags)
{
auto s = static_cast<state_unix_sock *>(state);
auto f = unique_frame(frame);
if (flags == PUTF_DISCARD)
return 0;
std::unique_lock<std::mutex> lg(s->lock);
if (s->incoming_queue.size() >= IN_QUEUE_MAX_BUFFER_LEN)
log_msg(LOG_LEVEL_WARNING, "Named pipe: queue full!\n");
if (s->incoming_queue.size() >= IN_QUEUE_MAX_BUFFER_LEN)
return 1;
s->frame_consumed_cv.wait(lg, [s]{return s->incoming_queue.size() < IN_QUEUE_MAX_BUFFER_LEN;});
s->incoming_queue.push(std::move(f));
lg.unlock();
s->frame_available_cv.notify_one();
return 0;
}
static int display_unix_sock_get_property(void *state, int property, void *val, size_t *len)
{
UNUSED(state);
codec_t codecs[] = {UYVY, RGBA, RGB};
enum interlacing_t supported_il_modes[] = {PROGRESSIVE, INTERLACED_MERGED, SEGMENTED_FRAME};
int rgb_shift[] = {0, 8, 16};
switch (property) {
case DISPLAY_PROPERTY_CODECS:
if(sizeof(codecs) <= *len) {
memcpy(val, codecs, sizeof(codecs));
} else {
return FALSE;
}
*len = sizeof(codecs);
break;
case DISPLAY_PROPERTY_RGB_SHIFT:
if(sizeof(rgb_shift) > *len) {
return FALSE;
}
memcpy(val, rgb_shift, sizeof(rgb_shift));
*len = sizeof(rgb_shift);
break;
case DISPLAY_PROPERTY_BUF_PITCH:
*(int *) val = PITCH_DEFAULT;
*len = sizeof(int);
break;
case DISPLAY_PROPERTY_SUPPORTED_IL_MODES:
if(sizeof(supported_il_modes) <= *len) {
memcpy(val, supported_il_modes, sizeof(supported_il_modes));
} else {
return FALSE;
}
*len = sizeof(supported_il_modes);
break;
default:
return FALSE;
}
return TRUE;
}
static int display_unix_sock_reconfigure(void *state, struct video_desc desc)
{
auto s = static_cast<state_unix_sock *>(state);
s->desc = desc;
return 1;
}
static void display_unix_sock_put_audio_frame(void *state, const struct audio_frame *frame)
{
UNUSED(state);
UNUSED(frame);
}
static int display_unix_sock_reconfigure_audio(void *state, int quant_samples, int channels,
int sample_rate)
{
UNUSED(state);
UNUSED(quant_samples);
UNUSED(channels);
UNUSED(sample_rate);
return FALSE;
}
static const struct video_display_info display_unix_sock_info = {
[](struct device_info **available_cards, int *count, void (**deleter)(void *)) {
UNUSED(deleter);
*available_cards = nullptr;
*count = 0;
},
display_unix_sock_init,
display_unix_sock_run,
display_unix_sock_done,
display_unix_sock_getf,
display_unix_sock_putf,
display_unix_sock_reconfigure,
display_unix_sock_get_property,
display_unix_sock_put_audio_frame,
display_unix_sock_reconfigure_audio,
DISPLAY_DOESNT_NEED_MAINLOOP,
};
REGISTER_HIDDEN_MODULE(unix_sock, &display_unix_sock_info, LIBRARY_CLASS_VIDEO_DISPLAY, VIDEO_DISPLAY_ABI_VERSION);